Reinforced box structure



(a; 1. THUST.

REINFORCED BOX STRUCTURE. APPLICATION FILED S EPT.9.. ms.

Patented Sept. 23, 1919.

INVENTOR barren snares raiser ost ich.

GEORGE J. THUST, OF MILWAUKEE, WISCONSIN.

REINFORCED BOX STRUCTURE.

release.

. Specification of Letters Patent.

Patented Sept. 23, 1919.

Application filed September 9, 1918. Serial No. 253,218.

description thereof.

My invention relates to new and useful improvements in box structures more particularly of that type formed of cardboard or similar material and provided with reinforcing means.

It is in general the object of my invention to increase the strength of box structures of this character, particularly with respect to the incorporation therein of reinforcing means, in a manner conducing to a most economical manufacture of the box, and a ready assembly of'the various box wall and end portions.

A further and more specific object resides in the provision of a reinforced box structure which is adapted to be shipped in a flat or knock-down condition, and wherein the reinforcing means of the box is utilized also as a means for securing various units of the box together.

Vv'ith the above and other objects and advantages in view, which will be apparent as the description proceeds, my invention resides in the 'novel features of construction,

combination and arrangement of parts as hereinafter described and defined by the ap- .-pended claims, it being understood that changes in the precise embodiment might be made by those skilled in the art, without de parting" from the spirit of the invention.

In the accompanying drawings:

Figure 1 is a plan view of the flattened wall portion of a cylindrical box embodying my invention, portions of the wall being broken away. i

Fig. 2 is an elevational view of the assembled cylindrical box, with an end portion thereof broken away.

Fig. 3 is a plan View of the box, with portions thereof successively broken aw. y.

Referring now more particularly to the cylindrical box structure shown in Figs. 1 to 3 of the drawings, wherein provision is particularly made for shipping the box in flat assembling units, the Wall portion 'of the box is formed of inner and outer wall sheets 10 and 11 respectively, a retainer sheet 12, circumferential reinforcing strands 13 disposed between the retainer sheet and outer wall sheet, and transverse reinforcing strands 14 disposed between the retainer sheet and wall sheet.

In forming the wall unit. the circumferential and transverse reinforcing strands, which in the present instance, are in the form of flat metallic strips,'are placed on the outer wall sheet in crossed relation, each of thestrands or strips 13 extending throughout the length of the sheet, and the transverse strands or strips 14 extending transversely across the sheet in regularly spacedrelation throughout the extent thereof and with their ends projecting past the sides of the sheet, which form the top and bottom edges of the wall. The retainer sheet 12 is then glued on the outer wall sheet over the reinforcing strands or strips to hold them in place. The inner wall sheet is then glued on the retainer sheet in such manner that one of its ends projects past the adjacent end of the outer wall sheet, and in the present structure substantially onehalf of the inner wall sheet projects past the end of the outer' wall sheet to provide a maximum overlapping of said sheets when they are bent to form the cylindrical Wall. It is noted that the width of the inner wall sheet 11 is slightly less than the width of the outer wall sheet, and

thus its sides form seating ledges at the ends of the inner periphery of the cylindrical;

the wall section formed by the inner sheet,

and which is adapted to seat against the ends of the sheet. A second end closure plate 16 is provided for each end of the box which is equal in diameter to the external diameter of the box wall.

In assembling the box structure described, the wall unit heretofore described is bent in cylindrical shape, with the projected half portion of the inner wall sheet glued to the retainer sheet 12, whereby the ends of all of the sheets are disposed in abutting relation. The end closure plates 15 are then inserted in the wall to seat on the ledges formed by the sides of the inner wall sheet 11, the projec'ted ends of the transverse reinforcing strands or strips 13 are then bent inwardly over the plates 15 and the outer end plates 16 are then glued in place to thus present a container and to seal the box.

finished appearance to the completed box or ll desired, the extremities of the projected end portions of the transverse retainer strands may be secured to end connecting rings 17 disposed between the end closure plates 15 and 16. In Fig. 3. the metallic reinforcing strips are extended under the rings and then bent outwardly in hook shape.

An exceedingly simple box structure is thus provided which may be shipped in flat assembling units, and readily set up to provide an airtight: container, the retainer sheet 1; holding in assembled position the reinffll't'lligl strands of that portion of the outer wall sheet 12 which is projected past the inner wall sheet 11.

llhile I have shown a preterred embodiment of my invention, it will be appreciated that my invention may be incorporattal in other embodiments without departing from the spirit of the invention, which resides primarily in the provision of embedded reinforce wires having their ends n'ojeeted past the box units in which they are elnbeddethlor securement to adjacent box units, this extension and seeurement of the ends of the reinforce members procuring an exceed ingly simple structure, and also serving to procure a maximum distribution of strains to which the assembled box might be subject, it being noted that strain applied to any reinforcing strands, will be distributed throueglmut the box section in which the strand is embedded, and will also be distributed through the adjacent box sections to which the strand is connected.

What is claimed is:

- 1. A box including inner and outer wall sheets glued together, reinforcing strands extending between the wall sheets and retained in place by the glue engagement of the wall sheets, the ends of said strands extending: past the edges of the wall sheets and directed laterally, and vinne and outer sheets for each end of the box glued together, the laterally directed ends of the reinforcing strands being disposed between the end sheets and retained in place by the glue on gagetnent of the end sheets to secure said end sheets to the wall sheets.

2. A box including inner and outer Wall sheets glued together, reinforcing strands extending between the wall sheets androtained in place by the glue engagement of the wall sheets, the ends of said strands eX- tending past the edges of the wall sheets and directed laterally, inner and outer sheets for each end of the box glued together; the laterally directed end of the reinforcing strands being disposed between the end sheets and retained in place by the glue engagement of the end sheets to secure said end sheets to the wall sheets, and connecting means for the laterally turned ends of the reinforcing strands disposed between the end sheets.

3. A wall unit for a cylindrical reinforced box comprising a wall sheet, reinforcing strands on said wall sheet, a retainer sheet glued ,on the wall sheet to retain the raintorcing trands in place by the glue engagement of'tl e sheets, and a second wall sheet glued on the retainer sheet. with one end projected pastjhe adjacent end of the first named wall sheet whereby to procure overlapping relatioifot said sheets when 'said sheets are bent to form the cylindrical Wall.

In testimony that lt claitn the foregoing I have hereunto set my hand at hlilwaukee, in the county of Milwaukee and State of Wisconsin.

eno. J. THUST.

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